About the company

eCap Marine develops and delivers hydrogen, battery, and hybrid propulsion systems that enable safe, emission-free operations for ships, ports, and industrial sites worldwide. With over a decade of engineering expertise and a base in Hamburg, we combine technical innovation with regulatory compliance to help maritime operators transition to a sustainable future.

As a member of ZESTA, we support shipowners, operators, and project partners in turning ambitious decarbonisation targets into safe, reliable, and scalable solutions.

“ Driving the Shift to Zero-Emission Maritime Energy ”

Emission-free Marine Propulsion System

Our zero emission Marine Propulsion Systems integrate hydrogen fuel cells, battery energy storage and intelligent energy management. Modular and scalable, are suitable for both newbuilds and retrofit projects. Fully compliant with class and regulatory requirements, they enable reliable operation on inland waterways and at sea.

Hydrogen Tank System

Designed for maritime conditions, our Hydrogen Tank Systems are modular, transportable and equipped with standardised interfaces, toolless connections and advanced safety features. Already certified and tested, they provide reliable hydrogen supply for fuel cells while meeting regulatory and classification requirements.

From Engineering Concept to Operational System

A key reference is the H2 PowerPac installed on the offshore service vessel (OSV) Coastal Liberty, demonstrating the safe and reliable application of hydrogen fuel cell technology in offshore operations.

Projects like this illustrate our capability to guide clients from feasibility studies through system integration, commissioning, and operational support.

Our business scope for Clean Power Solutions:

Driving the Shift to Emission Free Energy

Our team offers full-spectrum expertise, from feasibility studies and technical design to gaseous fuel systems, ensuring full compliance with authorities and classification societies. We create safe, scalable solutions that enable emission-free operations at sea and onshore.